Muffle leek



- A. c. CRIMMEL MUFFLE LEER Filed May 11, 1923 2 Sheets-Sheet 2 ail/EJ151764 Z "QNYENTOR:

" 'ATTORNEYS.

Patented Dec. 2, 1924.

lensin- PATENT OFFICE.

ALVIE C. CRIMMEL, OF HARTFORD CITY, INDIANA.

MUFFLE LEER.

Application filed May 11,1923. Serial No. 638,268.

I! 0 all whom it may concern Be it known that/I, Anvrn C. GRIMMEL,

a citizen of the United States, residing at Hartford City, in the county of Blackford, State of Indiana, have invented a new and useful Muffle Leer, -of which the following is a specificat on.

My invention relates to a novel construction of a muffle leer wherein a plurality ofin'dependent removable muffles or muffle units are employed which are so collocated that in case of an explosion or the necessity arising for the removal of any one unit, this can be readily accomplished and new mufile or unit substituted without disturbing the other muffle units or necessitating the closing down of the leer for repairs which ordinarily requires a considerable period of time.

My invention constructionlofa series of independent removable mufiie units arranged substantially in parallelismand .in proximity to each other, each being' provided with openings at or near their opposite ends and supported upon the walls of the leer in such a way that neither the products of coinbustion nor the flame come in direct contact with the ware in the annealing chamber which is'annea-led by the action of radiant heat radiated upon the wars from the muf-- fie units and their adjuncts as hereafter described, theleer being fired by any desired type of fuel, as. gas, oil, or producer gas.

It further consists of a novel construction of a removable muflle unit comprising a rectangular or. other box shaped casing of metal or other material which is closed on all sides and provided with openings near its ends which are adapted to serve as inlet or outlet openings, may bodesired.

It further consists of the novel[combimrtion of a'leer provided with inlet andnoutm let fluescoacting "with theinlet and outlet openings of removable 'mufile units, posi: tioned transversely of theleer and its annealing chamber, whereby the contents of the latter are subjectedto the proper degree of heat from 'saidmulfle units and theiradjuncts.

It further consists of the novel constructlon of a eer, provided with inlet utfurther consists of a novel let flues coacting with the inlet and outlet openings ofa plurality of removable muffle units positioned transversely of the leer and its annealing chamber, the outer ends of said units being supported upon the walls of the leer, vand the top -of said units being vcovered with cork brick, so that any desired unit can be removed and replaced atwill at a minimum expense.

If further consists of a leer and muffleunits of the character aforesaid, wherein the products of combustion or the heating medium may or may not pass through adjacent muflie units in opposite directions in order to maintain a substantially uniform heat throughout substantially the entire area of the annealing chamber.

It further consists of other novel features of construction and advantage, all as will be hereafter set forth and pointed out in the claims.

For the purpose of illustrating my invention, I haveshown in the accompanying drawings forms thereof-which are at present preferred by me, sinceqthey will give in practice satisfactory and reliable results, although it is to be understood that the vari ous instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.-

Figure 1 represents a transverse vertical sectional view of a mulfle leer embodying my invention, the section being on line 1 1 Figure 2..

Figure '2 represents a longitudinal vertical section online 22 Figure 1.

Figure 3 represents on a .redi'lcod scale a perspective view. partly broken away of a muflie unit .in detached position, showing thev internalconstruction, and the inlet and outlet openingsthereof.

Figure 4; represents a longitudinal sectional detail of a modified arrangement of mufiies and stay bolts.

Figure 5 represents a transverse section on line, 55 of Figure 4, of the construction represented in Figure 4, with the ends of the mufiie open.

Figure 6 represents a that of Figure 5, with the end of the muffle closed by an independent removable plate.

Figure 7 represents a fragmentary end section of a muffle and a fine extending up to its top.

Similar numerals of reference indicate corresponding parts.

Referring to the drawings:

In carrying out my invention, which is capable of adaptation to a leer of any standard or conventional type, I employ mulile or muffle units 1 composed of the top 2, bottom 8, ends 4, and sides 5, the same being constructed of sheet iron or the like and the base or bottom 3 having in the opposite ends thereof the openings 6 and 7 which counnunicate respectively with the inlet fine 8 and outlet flue 9, as will be understood from Figure 1. If desired, of course, these openings 6 and 7 may be either in the base or the bottom of the unit,- or may be so placed as to be near the ends of the muffle. These mufl'l'es or muli'le units are shown in the present instance as being rectangular, but they may be obviously of other shapeszand made of other material than sheet iron.

The top 2 and bottom 8 of each mulile is braced and reinforced by stay bolts 10, so that a rigid and durable structure is produced. If desired a plate of steel may be placed on top of the muflie, to which the stay bolts may be attached, allthese parts being in the outside air and not entirely covered by the insulating material. The muflles may be of one standard dimension or construction and are supported at their outer ends on the furnace walls 11 and 12 and 1S and 14 in any suitable manner, as will be understood from Figure 1, the outer furnace walls 15 being preferably built up sufficiently high to enclose the muffle ends 4t, while along the tops of the mu'l'lles. I place a layer of cork brick 16. The muffles are arranged in parallelism upon their supporting walls with the openings 6 and 7 aligning with the coactiug lines, it being understood that the gases an if desired travel in adjacent utilities in oppositedirections, as will be understood from the arrows in Figure 2 and in order to allow for the expansion and contraction of the H'lllll'lO walls under the heat to which thcv are subj ctcd, I arrange the juxtaposed walls slightly out of contact, so as to provide the spaces 17 as seen in Figure 2/, which obviously permit of the requisite expansion of the muffle walls. It will be seen from the foregoing that Ihare pr vided a series of detachable or removable m'uflles or muille units which can be readily assembled in position, each unit being independent of the other, so that in case of an explosion, or any damage to any of said muffles or units, it is only necessary to remove the cork brick 16 above it, take out the desired or injured unit and replace it by a new one, This can be done in a relatively short space of time and with a great saving of materials and labor, as compared with the present practice of tearing down or dismantling the portion of the leer, which may be damaged by an explosion or from other causes. I have deemed it unnecessary to describe in detail the construction of the leer or annealing furnace, as my invention is applicable to any standard or conventional leer, as is evident, the producer gas or other source of heat in the present instance being introduced at the point 18 and passing to the inlet flue 8 through the opening 19. 2O designates the annealing chamber containing the tray 21 for the ware or articles to be annealed which is located above the arch 22, and it is of course obvious that the articles to be annealed may be moved in and out of the furnace on cars or travelling aprons passing through the furnace, as is customary, if desired.

Referring to Figures 4, 5 and 6, in which modified constructions are illustrated, 18 represents a top plate spreading across T bars 19 resting upon a plurality of muffles which are separated at a distance from each other sufficient to admit between them pairs of tie bars 20 which are exposed to the atmosphere.

21 designates angle bars beneath the muflles 1 and extending beyond the latter so as to receive the lower ends of the bars 20.

In Figures 5 and 6 the top plates 18 rest upon the T bars 19 and the material difference between the two constructions resides inthe fact that the muilles in Figures 5 and 7 are open-ended and in Figure 6 closed by removable plates 22.

In the construction of Figure 7 the muftle's have open ends and the fines extend up to their tops.

Having thus described my invention what I claim as new and desire to secure by Lettors Patent, is

1. The combination of a non-metal leer and a plurality of independent removable metallic units serving as n'iuffles therefor and having openings in their opposite portions adapted to serve as either inlet or outlet openings and means for bracing said metal units.

The combination of a non-metal leer having inlet and outlet lines, and a plurality of independent removable metallic units serving as muifles therefor and having openings in their opposite portions enacting with said fines and adapted to serve as either inlet or outlet openings and means for bracing said metal units.

The combination of a non-inetal leer having inlet and outlet flues, means to pass products of combustion through adjacent lines, a plurality of removable muifle metal units arranged transversely of said leer and having openings at or near each end serving as either inlet or outlet openings and means for bracing said metal units.

4. The combination of a non-metal leer having inlet and outlet flues, means to pass products of combustion through adjacent flues, a plurality of removable muffle metal units arranged transversely of said leer and having openings at or near each end serving as either inlet or outlet openings, means for bracing said metal units and an annealing chamber located below and in proximity to said units.

5. The combination of a non-metal leer having upright inlet and outlet lines, a plurality of removable metal mufiles arranged transversely of said leer and having openings at or near each end coacting With said lines and serving as either inlet or outlet openings, the top of said mufiles being covered With insulating material and stay bolts for b 'acing said units.

6. The combination of a non-metal leer having upright inlet and outlet flues, a plurality of removable metal muffles arranged transversely of said leer and having openings at or near each end coacting With said fines and serving as either inlet or outlet openings, the outer ends of said muflles being suitably supported With reference to said fines, and the top of said muilles being covered With insulating material and stay bolts for bracing said units.

7. In a muffled leer, a removable metal mulile unit, composed of a top, sides, ends and bottom, said unit having openings at or near its opposite ends adapted to serve as either an inlet or outlet for the hot gases and means for bracing said unit.

8. In a muffled leer, a removable metal muflle unit, composed of a closed top, sides and ends, and a bottom having openings at I or near its opposite ends adapted to serve as either inlet or outlet openings for the hot gases and means for bracing said unit.

9.- In a mufiled leer, a removable mufiie unit, composed of a top, sides, ends and bottom, stay bolts common to said top and bottom, and openings at or near the opposite portions of said unit adapted to serve as either inlet or outlet openings for the hot gases.

10. In a muliled leer, a removable metal muiile unit, composed of a top, sides, ends and bottom, said unit having openings at or .11ear its opposite ends, and being adapted to serve as either an inlet or outlet for the hot gases, and inlet fiues communicating with said openings, the upper ends of the walls of said fines supporting said units and means for bracing said unit.

11. In a muflled leer, a plurality of metal muffles arranged side by side and out of contact, each being composed of a closed top, sides and ends, and a bottom having openings at or near its opposite ends adapted to serve as either inlet or outlet openings for the hot gases, and inlet and outlet fiues communicating With said openings, the Wall of said fines supporting said mufiles and stay bolts for bracing said mufiles.

12. In a mufiled leer, a removable muflle unit, composed of a plurality of box-like units comprising a closed top, sides, ends and bottom, stay bolts common to said top and bottom, and openings at or near the opposite portions of said unit adapted to serve as either inlet or outlet openings for the hot gases.

ALVIE C. CRIMMEL.

Witnesses:

E. F. WILLMAN, JOHN DEE. 

